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A rare occurrence of Anaplasma-associated peritonitis

Valerie Bush1, Jitendra Chaudhary1, Devarajan Manu2

  • 1Departments of Pathology and Laboratory Medicine.

Laboratory Medicine
|March 27, 2023
PubMed

Insights

Anaplasmosis, a tick-borne illness, can affect peritoneal dialysis patients. This case study details the first instance of Anaplasma-related peritonitis, identified by morulae in peritoneal fluid.

Area of Science:

  • Infectious Diseases
  • Microbiology
  • Nephrology

Background:

  • Anaplasmosis is a tick-borne disease caused by Anaplasma phagocytophilum.
  • Diagnosis often involves identifying morulae in neutrophils on blood smears.
  • Peritonitis is a serious complication in peritoneal dialysis patients.

Purpose of the Study:

  • To report the first case of Anaplasma-related peritonitis.
  • To describe the presence of Anaplasma morulae in peritoneal fluid granulocytes.
  • To highlight a rare presentation of anaplasmosis in a peritoneal dialysis patient.

Main Methods:

  • Case report of a peritoneal dialysis patient with suspected anaplasmosis.
  • Microscopic examination of blood smears and peritoneal fluid.
  • Identification of Anaplasma phagocytophilum morulae within granulocytes.

Main Results:

  • The patient presented with symptoms suggestive of peritonitis.
  • Anaplasmae morulae were identified in the cytoplasm of granulocytes within the peritoneal fluid.
  • This finding confirmed Anaplasma-related peritonitis.

Conclusions:

  • Anaplasmosis can manifest as peritonitis in peritoneal dialysis patients.
  • Detection of morulae in peritoneal fluid is a key diagnostic indicator.
  • This case expands the known clinical spectrum of anaplasmosis.
Keywords:
WBC differentialanaplasmosisgranulocytesmorulaeneutrophilperitonitis

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